Way back in the beginning, when online reviews were first introduced, I could see the validity in using them to form an opinion of a business. These days it is nowhere near that clear anymore.
Angie's List has been advertised quite a bit lately and while I love the idea that they purport, they do not really say how they guarantee that the reviews are real. I know for a fact that people can be hired on various sites to purposely post raving reviews on other sites (whether they actually used the product or service or not)
Case in point, just heard a radio advertisement for a COMPANY that apparently does just that. They specifically said in the ad that they remove negative reviews and information from the internet and ensure that positive information only is put online so that your business' reputation is cleaned up.
And that, is why I do not trust reviews any more, even from sites such as Angie's List.